Add Function.new in llvmpy compat layer
Add Function.new in llvmpy compat layer

m-labs/llvmlite,markdewing/llvmlite,ssarangi/llvmlite,pitrou/llvmlite,sklam/llvmlite,ssarangi/llvmlite,markdewing/llvmlite,ssarangi/llvmlite,numba/llvmlite,sklam/llvmlite,sklam/llvmlite,squisher/llvmlite,numba/llvmlite,pitrou/llvmlite,m-labs/llvmlite,pitrou/llvmlite,pitrou/llvmlite,squisher/llvmlite,m-labs/llvmlite,markdewing/llvmlite,m-labs/llvmlite,numba/llvmlite,squisher/llvmlite,markdewing/llvmlite,squisher/llvmlite,sklam/llvmlite,numba/llvmlite,ssarangi/llvmlite